KEYWORDS: High dynamic range imaging, Video, Video coding, Molybdenum, Visualization, Image processing, Digital image processing, Sodium, Visual process modeling, Distortion
In high dynamic range (HDR) video, it is possible to represent a wider range of intensities and contrasts compared to the current standard dynamic range (SDR) video. HDR video can simultaneously preserve details in very bright and very dark areas of a scene whereas these details become lost or washed out in SDR video. Because the perceived quality due to this increased fidelity may not fit the same model of perceived quality in the SDR video, it is not clear whether the objective metrics that have been widely used and studied for SDR visual experience are reasonably accurate for HDR cases, in terms of correlation with subjective measurement for HDR video quality. This paper investigates several objective metrics and their correlation to subjective quality for a variety of HDR video content. Results are given for the case of HDR content compressed at different bit rates. In addition to rating the relevance of each objective metric in terms of its correlation to the subjective measurements, comparisons are also presented to show how closely different objective metrics can predict the results obtained by subjective quality assessment in terms of coding efficiency provided by different coding processes.
KEYWORDS: Video, Video coding, Computer programming, Quantization, Standards development, Video compression, Motion estimation, Digital video discs, Matrices, Video surveillance
H.264/MPEG-4 AVC is the latest international video coding standard. It was jointly developed by the Video Coding Experts Group (VCEG) of the ITU-T and the Moving Picture Experts Group (MPEG) of ISO/IEC. It uses state-of-the-art coding tools and provides enhanced coding efficiency for a wide range of applications, including video telephony, video conferencing, TV, storage (DVD and/or hard disk based, especially high-definition DVD), streaming video, digital video authoring, digital cinema, and many others. The work on a new set of extensions to this standard has recently been completed. These extensions, known as the Fidelity Range Extensions (FRExt), provide a number of enhanced capabilities relative to the base specification as approved in the Spring of 2003. In this paper, an overview of this standard is provided, including the highlights of the capabilities of the new FRExt features. Some comparisons with the existing MPEG-2 and MPEG-4 Part 2 standards are also provided.
KEYWORDS: Video, Video coding, Standards development, Video compression, Motion estimation, Computer programming, Binary data, Digital video discs, Quantization, Surface plasmons
H.264/MPEG-4 AVC is the latest coding standard jointly developed by the Video Coding Experts Group (VCEG) of ITU-T and Moving Picture Experts Group (MPEG) of ISO/IEC. It uses state of the art coding tools and provides enhanced coding efficiency for a wide range of applications including video telephony, video conferencing, TV, storage (DVD and/or hard disk based), streaming video, digital video creation, digital cinema and others. In this paper an overview of this standard is provided. Some comparisons with the existing standards, MPEG-2 and MPEG-4 Part 2, are also provided.
KEYWORDS: Video, Video compression, Video coding, Standards development, Computer programming, Eye, Image processing, 3D video compression, Televisions, Motion estimation
Recent developments in the technology of digital video compression, transmission and displays have made the multiple viewpoint digital video viable for many applications, e.g. stereoscopic view for 3D TV and arbitrary angle scene compositing for virtual camera, etc. To facilitate these applications the Motion Pictures Experts Group (MPEG) of the International Standards Organization (ISO), that successfully created the MPEG-1 & 2 standards, has been working on amending the MPEG-2 standard to create a new MPEG-2 profile, called the Multi-View Profile (MVP). MVP features a two-layer -- base layer and enhancement layer -- video coding scheme. The base layer video is coded as MPEG-2 main profile (MP) bitstream. The enhancement layer video is coded with temporal scalability tools and exploits the correlation between the two viewing angles to improve the compression efficiency. This type of two layer approach guarantees backward and forward compatibility with main profile receivers and encoders; i.e. an MVP decoder will be able to decode any main profile bit stream at the same level and a main profile receiver will be able to decode the base layer of an MVP stream to generate and display mono view scenes of the same program. In stereoscopic video applications the base layer is assigned to the left eye view and the enhancement layer to the right eye view. This paper provides an overview of the MPEG-2 MVP and focuses in detail on the stereoscopic video compression algorithms.
Conference Committee Involvement (7)
Applications of Digital Image Processing XLIV
1 August 2021 | San Diego, California, United States
Applications of Digital Image Processing XLIII
24 August 2020 | Online Only, California, United States
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